hi,
can anyone help me out for generating sequence for one of the keys of a composite id..
ex:

<composite-id>
<key-Property name ="id" column="" type="">
<key-Property name ="id2" column="" type="">
<composite-id>

how to make the "id" key as a sequence in one of these composite id?

please help me out..

thanks in advance...
vinay

If you're generating your "id" column, it will be unique on it's own. Why do you need the composite-id ?

hi ,

i got u r point ..

i have already implemented that ..
but i have to use composite id and in which one shd be autogenerated and one shd be assigned...

help me out in this issue.
thanks
vinay

I had the same problem some time ago. One way to solve is to define the generated property ("id") as id and using a <properties unique="true"> element to define an additional unique set. You could reference that with the attribute property-ref in associations/collections (not in joins!).
Another way is using composite-id and writing the class to it own your own (with SQL query to get a new sequence number). A third way that might work (though I didn't get it to work) is using <sql-insert>. The SQL queries I tried with it work in Oracle but not in Hibernate - maybe somebody can figure out how it works properly.
See http://forum.hibernate.org/viewtopic.php?t=941843 and http://forum.hibernate.org/viewtopic.php?t=942144

I hope that helps ...